城市水库水质模糊综合评价模型建立与应用

 考虑到城市水库水质样本没有严格的属性,以及在形态和类属方面存在着中介性,确定了城市水库水质评价中对人类生理健康影响较大的高锰酸盐指数、生化需氧量、总氮、氨氮、氟化物、总磷、溶解氧等10项评价因子;以第i种污染物实测浓度与该污染物各级水质标准值的算术平均值之比作为第i种污染因子的权重值,对各单项权重值进行归一化处理,建立基于模糊综合评价法的城市水库水质评价模型。最后,将所建模型应用到阜新市目前饮用水库水质评价中,结果表明,所建模型既能有效地判断饮用水源水质类别,又能确定水体中主要污染物和主要污染源。对不同评价方法评价结果的比较分析体现了所建模型的有效性和良好适用性。

Establishment and Applications of Fuzzy Comprehensive Evaluation Model for City Drinking Water Source Quality Assessment

In view of lack of strict attribute and intermediary in drinking water source form and class attribute, nine assessment factors which have much more influence on human health in drinking water source quality assessment are identified. For example, permanganate index, biochemical oxygen demand, total nitrogen, ammonia nitrogen, fluoride, total phosphorus, dissolved oxygen, etc. The ratio of i-th pollutant measured concentration to average value of its each water quality standard is used as the corresponding weight of i-th factor. And all the factors' weights are treated by normalization before taken into the assessment. Then fuzzy comprehensive evaluation model on water source quality assessment is established and applied to main water source quality assessment in Fuxin City. The results show that fuzzy comprehensive evaluation model on drinking water source quality assessment not only could identify the source water quality level, but also could find out the main pollutants and main pollution sources. The final analysis results of different assessment methods indicate that fuzzy comprehensive evaluation model on drinking water source quality assessment possesses validity and favorable applicability.